MapReduce-based skyline query processing scheme using adaptive two-level grids. - Hyeong-Cheol Ryu; Sungwon Jung (Clust. Comput., 2017)

Mapreduce-Based Distributed Clustering Method Using CF+ Tree. - Hyeong-Cheol Ryu; Sungwon Jung (IEEE Access, 2020)

An Effective Clustering Method over CF$^+$+ Tree Using Multiple Range Queries. - Hyeong-Cheol Ryu; Sungwon Jung; Sakti Pramanik (IEEE Trans. Knowl. Data Eng., 2020)

MCF Tree-Based Clustering Method for Very Large Mixed-Type Data Set. - Hyeong-Cheol Ryu; Sungwon Jung (IEEE Access, 2021)